imeepos 4cb6b63948 feat: 修复抖音图片审核失败并设计统一异步架构
解决抖音图片审核"无效图片URL"问题,并设计统一异步架构方案:

## 核心修复
- 增强 validateImageUrl 方法,支持文件扩展名 + Content-Type 双重验证
- 修复抖音审核失败问题:binary/octet-stream 响应头导致的验证失败

## 架构设计
- 设计统一异步内容审核架构,抹平平台差异(同步/异步)
- 创建 EnhancedBaseContentAdapter 统一接口
- 实现平台适配器模式,WeChat同步转异步,Douyin原生异步
- 添加回调驱动的模板执行流程

## 数据库增强
- 新增 taskId 字段关联审核任务和模板执行
- 添加 PENDING_AUDIT 状态支持异步审核流程
- 创建 MySQL 优化的数据库迁移脚本

## 文档完善
- 更新内容审核设计文档,包含详细序列图
- 创建 5 阶段升级文档,含 MySQL 专项优化
- 提供完整的向后兼容迁移方案

## 测试改进
- 更新单元测试,修复 validateStatus 参数
- 增强错误处理和边界情况测试覆盖
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A progressive Node.js framework for building efficient and scalable server-side applications.

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Description

Nest framework TypeScript starter repository.

Project setup

$ pnpm install

Compile and run the project

# development
$ pnpm run start

# watch mode
$ pnpm run start:dev

# production mode
$ pnpm run start:prod

Run tests

# unit tests
$ pnpm run test

# e2e tests
$ pnpm run test:e2e

# test coverage
$ pnpm run test:cov

Deployment

When you're ready to deploy your NestJS application to production, there are some key steps you can take to ensure it runs as efficiently as possible. Check out the deployment documentation for more information.

If you are looking for a cloud-based platform to deploy your NestJS application, check out Mau, our official platform for deploying NestJS applications on AWS. Mau makes deployment straightforward and fast, requiring just a few simple steps:

$ pnpm install -g @nestjs/mau
$ mau deploy

With Mau, you can deploy your application in just a few clicks, allowing you to focus on building features rather than managing infrastructure.

Resources

Check out a few resources that may come in handy when working with NestJS:

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